I've tried other brands with TryptoPure, and even very pricey Regent grades, and they didn't work anywhere near as well as this Jarrow brand. As a hard-core insomiac for over a decade, I've had to use various sleep aids and then Lunesta when it became available in order to sleep. Not any more.
I can take two of these capsules on a empty stomach at bedtime and get quality sleep! When I wake up in the middle of the night, as I always do anyway (even on lunesta), I take one tablet and before I know it, can go back to sleep quickly.
Seriously, I never thought I would get back my ability to get good sleep, something that moost people probably take for granted.
I will never use another brand of tryptophan, and iHerb's prices and service can't be beaten!! Thank you Jarrow and thank you iHerb!

Very pleased. Definite improvement in mood,outlook and sleep patterns. Have quite a bit of longterm experience with SSRI and SNRI antidepressants and other alternative therapies-st. johns wort,5 htp,fish oil,etc... I take 4 of these( L Try) at bedtime with the co-enzyme p 5 p version of b-6 50 mg (w/orange juice). NOW Foods makes the one I use.
I also take low dose 5 mg Lexapro and I know for myself the L-Tryp definetly has a beneficial,additive effect w/out so many of the typical side effects associated with SSRI therapy. Also take magnesium,Vit C, B complex,multi vitamin... Grateful and very pleased.